"Touch My Body" is a song co-written by American singer Mariah Carey, Christopher "Tricky" Stewart, Crystal "Cri$tyle" Johnson and The-Dream for Carey's eleventh studio album, E=MC². Produced by Carey, Stewart and Nash, it was released as the lead single of the album. The song is Carey's eighteenth number 1 single on the Billboard Hot 100 and it gave Mariah her 79th week at number 1 on that chart.

The song was chosen as the lead single of the album during a vote with producer L.A. Reid and staff in Island Records. Carey stated that the group "decided to just go with the mid-tempo and everybody kinda liked the song 'cause it's just fun and cute and sexy and sweet."

The song was transmitted digitally to radio stations on February 12, 2008 at 6:30 pm EST for immediate airplay via All Access and made its debut on Chicago radio station B96, ahead of schedule at 2:20pm. The single officially went for adds on radio station playlists on February 19, 2008. The single was released digitally on March 24, 2008.

Critics' reviews of the song were generally positive. was quite positive, saying that "this sensual jam is 100% Mariah, packed with satisfying harmonic layers and hooky background 'oh's,' supersonic verses and a chorus as catchy as a winter sniffle," and stated that it was a "pop genius making genius pop." Bill Lamb from About.com also gave "Touch My Body" a positive review, giving it 4 out of 5 stars, stating that the single "is simple, sexy elegance from one of the most enduring of pop stars." Newsdayalso named it as the "Song of the Week." commenting that it was "the best opening single she's had since "Heartbreaker." Digital Spy was also positive, saying "its cooing, sensual charms soon take hold, suggesting the wind's still very much behind the Carey comeback bandwagon."

Some critics were less positive. Slant Magazine's Sal Cinquemani said that the single "isn't exactly filled with combustible energy and it lacks the full-throttle belting that accompanied the Return of the Voice three years ago, but it features all of the characteristics one expects from a latter-day Mariah track." Rolling Stone gave it 3.5 stars in its March 6, 2008 issue, as they felt that "this hyperdirty single [has] Mariah's storied vocal range...blunted in favor of generic, highly digitized heavy breathing, [but it is] a spare, slick track composed mostly of synths and finger snaps."

Carey promoted the song on various shows, including Saturday Night Live, the season premiere party of The Hills, Jimmy Kimmel Live!, Good Morning America, and the Teen Choice Awards.

The video won in the category Best Comedic Video at the 2008 BET Awards. and was nominated for Best Female Video at the 2008 MTV Video Music Awards.

Thanks to "Touch My Body" single, Mariah Carey received a Honorary Achievement Award for her record-breaking accomplishments of 18 number 1 singles and most weeks at number 1 on the Billboard Hot 100 at the 2008 American Music Awards and she was also honoured with a Special Achievement Award for most number 1 singles (18) achieved by any female solo recording artist at the 2008 World Music Awards.

After only a day's worth of airplay, "Touch My Body" entered the BillboardHot R&B/Hip-Hop Songs Chart at number 78 the chart week of February 23, 2008. and peaked at number 2. It also debuted at number 57 on the Billboard Hot 100 as the "Hot Shot" debut a week later. It has reached number 1 on the Billboard Pop 100. The track reached number 2 on the U.S. BillboardHot Singles Sales chart remaining 21 weeks on that chart. It reached number 3 on the Hot RingMasters chart. Following the song's digital release, on April 2, 2008, it was announced that "Touch My Body" became Carey's 18th number 1 single on the Billboard Hot 100, pushing her to second place among artists with the most number 1 singles in the rock era and first place as a solo artist in the same category, surpassing Elvis Presley. The song stayed at the number 1 spot for two weeks. It sold an at the time record 286,000 digital downloads in its first week of availability and topped the U.S. Billboard Hot Digital Songs chart. The single has been certified platinum by RIAA. Touch My Bodysold over 115,000 downloaded copies in the United Kingdom According to Mediabase, "Touch My Body" gathered 2.554 billion audience impressions and 328,000 total spins in the United States to date. On the U.S. Hot 100 Airplay the song reached number two. The track was also a dance hit, peaking at number 1 on the U.S. Billboard Hot Dance Club Play, at number 6 on the U.S. Billboard Hot Dance Airplay and at number 7 on the Global Dance Tracks Chart. The song was also an urban hit. On the U.S. Billboard Hot R&B/Hip-Hop Songs, "Touch My Body" peaked at number 2. It entered the Canadian Hot 100 at number 97, based on airplay alone and has peaked at number 2. The song also peaked at number 2 on the Hot Canadian Digital Singles chart.

Moreover in Europe, the track has peaked within the top ten 10 in Greece (No. 9), Portugal (No. 10), Slovakia (No. 8), Switzerland (No. 3), Germany (No. 6), Italy (No. 5), Norway (No. 10) and Austria (No. 10). In France "Touch My Body" peaked at number 16 and stayed on chart 19 weeks. On the Dutch Top 40 has reached number 14 and stayed on chart 7 weeks. "Touch My Body" debuted at number 99 in UK Singles Chart. The next week, it rose to number 6 then peaked at number 5. It spent 8 weeks in the Top 40 and 11 weeks in the Top 75. The track reached number 5 on the UK Download Chart. "Touch My Body" peaked at number 14 on the Swedish Singles Chart. On the European Hot 100, "Touch My Body" debuted at number 10 and has reached number 3, spending 14 weeks on the chart. Due to strong digital sales, the track peaked at number 5 on the Euro Digital Songs chart. In Australia, the single has peaked at 17, making her 23rd top 20 hit. In New Zealand became a top 5 hit. On the Japan Hot 100, the song peaked at number 5.

The official remix, "Touch My Body (Love/Hate Remix)" or "Touch My Body (Tricky Remix)", was produced Christopher "Tricky" Stewart and The-Dream, features Def Jam labelmates rapper Rick Ross on the 1st verse & R&B singer The-Dream, who co-produced the song, on the 4th verse and Carey's 1st verse from the original used after Ross' verse and her 2nd verse of the remix is the 1st part of the chorus, also from the original. There is an unofficial remix that features R&B singer R. Kelly aka "The Remix Killa" which he called himself from the chorus, which gained numerous radio airplay. Also, there's an unreleased remix by David Morales that was posted on his Myspace page around the time of the single release.

The music video starts with an employee of a fictional company called "CompuNerd" arriving at Carey's mansion, played by Jack McBrayer. As she leads him up the stairs, she removes her robe revealing black lingerie and begins to sing. She warns him that there better not be a camera in the room. The following scenes are a fantasy of the computer technician, including a pillow fight, laser tag, playing slot cars, a unicorn, and Carey in various sexy outfits. Carey is apparently a willing participant in the antics. The video ends with Carey waking the computer technician from his daydream.

The music video was directed by Brett Ratner. Carey reported that Ratner was commissioned to direct and film the video due to the fact that he also directed Carey's videos for "I Still Believe," "Heartbreaker," "Thank God I Found You," "It's like That," and "We Belong Together." In an interview with AllHipHop.com, Ratner said, "Mariah is musically at the top of her game and has never looked better... This will be our 6th music video we have collaborated on and definitely the best one yet visually, as well as musically. The video for "Touch My Body" is the perfect combination of fantasy and comedy with Mariah looking more beautiful than she has ever looked, ever." The video was filmed at Lenny Kravitz's house. The video also stars Jack McBrayer from 30 Rock, a show that Carey is a fan of. Carey appeared on MTV's Total Request Liveand BET's 106 & Parkon Wednesday, February 27, 2008, to premiere the video for "Touch My Body"; BET also played the video all day, every hour on the hour, until 106 & Park. VH1 posted a 45-second sneak peek on their blog on February 26, and subsequently posted the video in its entirety at midnight on February 27, 2008; the video was also posted on the Island Records website. The music video topped the U.S. BillboardHot Videoclip Tracks chart.

European CD single

Japanese CD single

Australian/European CD maxi-single